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The formation and late time decays of Q-balls are generic consequences of theAffleck-Dine (AD) baryogenesis. A substantial amount of the lightestsupersymmetry (SUSY) particles (LSPs) are produced non-thermally as the decayproducts of these Q-balls. This requires a significantly large annihilationcross section of the LSP so as not to overclose the universe, which predicts ahiggsino- or wino-like LSP instead of the standard bino LSP. We have reexaminedthe AD baryogenesis with special attention to the late-time decays of theQ-balls, and then specified the parameter regions where the LSPs produced bythe Q-ball decays result in a cosmologically interesting mass density of darkmatter by adopting several SUSY breaking models. This reveals newcosmologically interesting parameter regions, which have not attracted muchattention so far. We have also investigated the prospects of direct andindirect detection of these dark matter candidates, and found that there is anintriguing possibility to detect them in various next generation dark mattersearches.Comment: 51 pages, 18 figures, version accepted for publication in Physical  Review

Nonthermal dark matter via Affleck-Dine baryogenesis and its detection possibility